Following is a list of
spinal nerves and points that are characteristically belonging to the dermatome of each nerve: •
C2 – At least one cm lateral to the
occipital protuberance at the
base of the skull. Alternately, a point at least behind the ear. •
C3 – In the
supraclavicular fossa, at the
midclavicular line. •
C4 – Over the
acromioclavicular joint. •
C5 – On the lateral (radial) side of the
antecubital fossa, just proximally to the elbow. •
C6 – On the dorsal surface of the
proximal phalanx of the
thumb. •
C7 – On the dorsal surface of the
proximal phalanx of the
middle finger. •
C8 – On the dorsal surface of the proximal phalanx of the
little finger. •
T1 – On the medial (ulnar) side of the
antecubital fossa, just distal to the
medial epicondyle of the humerus. •
T2 – At the apex of the
axilla. •
T3 –
Intersection of the
midclavicular line and the third
intercostal space •
T4 – Intersection of the
midclavicular line and the fourth intercostal space, located at the level of the nipples. •
T5 – Intersection of the midclavicular line and the fifth intercostal space, horizontally located midway between the level of the nipples and the level of the
xiphoid process. •
T6 – Intersection of the midclavicular line and the horizontal level of the
xiphoid process. •
T7 – Intersection of the midclavicular line and the horizontal level at one quarter the distance between the level of the xiphoid process and the level of the
umbilicus. •
T8 – Intersection of the midclavicular line and the horizontal level at one half the distance between the level of the xiphoid process and the level of the umbilicus. •
T9 – Intersection of the midclavicular line and the horizontal level at three quarters of the distance between the level of the xiphoid process and the level of the umbilicus. •
T10 – Intersection of the midclavicular line, at the horizontal level of the umbilicus. •
T11 – Intersection of the midclavicular line, at the horizontal level midway between the level of the umbilicus and the
inguinal ligament. •
T12 – Intersection of the midclavicular line and the midpoint of the inguinal ligament. •
L1 – Midway between the key sensory points for T12 and L2. •
L2 – On the anterior medial thigh, at the midpoint of a line connecting the midpoint of the inguinal ligament and the
medial epicondyle of the femur. •
L3 – At the
medial epicondyle of the femur. •
L4 – Over the
medial malleolus. •
L5 – On the
dorsum of the foot at the third
metatarsophalangeal joint. •
S1 – On the lateral aspect of the
calcaneus. •
S2 – At the midpoint of the
popliteal fossa. •
S3 – Over the
tuberosity of the ischium or
intragluteal fold •
S4 and
S5 – In the
perianal area, less than one cm lateral to the
mucocutaneous zone Following is a list of
cranial nerves responsible for sensation from the face: •
V1 (1st division of the trigeminal nerve) - associated with
herpes zoster ophthalmicus •
V2 (2nd division of the trigeminal nerve) •
V3 (3rd division of the trigeminal nerve) == Additional images ==